Observed Signal · Apr 20, 2026 · Technical Release · Source: https://github.com/prebid/Prebid.js/releases.atom · Impact: 2/5 · Sentiment: Positive
Prebid.js 11.7.0 Released
Prebid.js v11.7.0 was published with new features, bug fixes and maintenance updates for the open-source header-bidding library. The release adds a new adapter (billow_rtb25) and reintroduces the core bidAccepted event. Fixes include Smartx Bid Adapter outstream renderer tests and adUnitCode wiring. Maintenance changes cover Nexx360 (remove gvlid from movingup alias), dependency bumps (babel, basic-ftp), GitHub Actions switching from axios to Node native fetch, MediaEyes endpoint update with multi-size banner support, and Vidazoo adapter additions for onBillable and onBidWon handling, among other adapter-specific fixes and type declarations.
An incremental open-source release of Prebid.js introduces a new adapter, restores a core event and includes multiple bug fixes and maintenance updates — relevant to publishers, bidders and integrators using header bidding but not industry-shifting.
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Key Takeaways & Evidence Grounding
- Prebid.js version 11.7.0 released.
- New adapter added: billow_rtb25.
- Core: reintroduced the bidAccepted event.
- Bug fix: Smartx Bid Adapter — fixed outstream renderer tests and wired adUnitCode.
- Maintenance: Nexx360 removed gvlid from movingup alias; GitHub Actions replaced axios with Node native fetch; MediaEyes updated endpoint and added multi-size banner support; Vidazoo added onBillable and onBidWon handling.
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Prebid.js 11.13.0 Released
Prebid.js 11.13.0, the open-source header-bidding library, was released on 2026-05-18. The release (tag 11.13.0) includes core type and build improvements, multiple maintenance updates to adapters and modules, and two new bid adapters: haloads and Anzu SSP. Core changes add TypeScript/type definition work (debugging module types, exporting more core types, making VideoMediaType properties optional), linting on imports, and further adpod cleanup. Maintenance notes include new or updated adapters (Movingup, Attekmi, Adelerate, CriteoId, pgamdirectBidAdapter, Selectmedia), RTD module tweaks, and documentation additions. Source archives (zip and tar.gz) were published with the tag on May 18, 2026.
Prebid.js 11.4.0 Released
Prebid.js published release 11.4.0 containing new features, bug fixes and maintenance updates for the open-source header-bidding library. Key additions include VAST tracker event-injection support, build-option support for non-Webpack bundlers, a new minTargetedBidCacheTTL setting to prevent winning bids from expiring, and a new LOGLY bidder adapter. The release also fixes a PBS Adapter bug that prevented sending an empty bidder array in eidpermissions and includes multiple adapter-specific maintenance changes (consent handling fixes, endpoint corrections, floor price support), dependency bumps, and new/updated adapters such as adsmovil and PubstackAdapter improvements.
Prebid.js 11.20.0 Released
Prebid.js published release 11.20.0 on 2026-06-24. The release includes core pull requests (notably alignment of Prebid Server adapter sync browser restrictions), a Windows build bug fix, multiple maintenance updates, and several adapter changes such as adding a new adapter (m152), updates to billow_rtb25 (sharedId support), and Uid2 id module adjustments. The release was published via the GitHub Actions account and includes source code archives (zip and tar.gz). The changelog lists linting and maintenance PRs, CI and build tool updates, adapter fixes and declarations (e.g., IAB Europe TCF GVL Vendor ID for Floxis), and various test and dependency updates.
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